86ec128d91
This makes things easier in the common case of <some error> -> <log error> -> <goto error handler> - <do something with errno> Signed-off-by: Ran Benita <ran234@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*
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* kmscon - Log Control
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*
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* Copyright (c) 2011 David Herrmann <dh.herrmann@googlemail.com>
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* Copyright (c) 2011 University of Tuebingen
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Log Control
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* Forward log messages to stderr. We use syslog and printk like severity
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* prefixes.
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*/
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "log.h"
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__attribute__ ((format (printf, 1, 2)))
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void log_printf(const char *format, ...)
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{
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va_list list;
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va_start(list, format);
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log_vprintf(format, list);
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va_end(list);
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}
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__attribute__ ((format (printf, 1, 0)))
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void log_vprintf(const char *format, va_list list)
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{
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int saved_errno = errno;
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vfprintf(stderr, format, list);
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errno = saved_errno;
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}
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